php - 在 Laravel 的字符串上调用成员函数 format()

Question

我路过fromdate和 todate从 View 到 Controller 。我想从数据库中打印这些日期之间的时间，但出现如下错误:

Symfony \ Component \ Debug \ Exception \ FatalThrowableError (E_ERROR) Call to a member function format() on string

我的查看页面 :

<div class="col-sm-4">
    {!! Form::open (['url' => 'admin/ad']) !!}
    <div class="form-group">
        {!! Form::label('', 'From date') !!}
        {!! Form::date('fromdate', '', ['class' => 'form-control']) !!}
        {!! Form::label('', 'To date') !!}
        {!! Form::date('todate', '', ['class' => 'form-control']) !!}
    </div>
    <div class="form-group">
        {!! Form::submit(('submit'), ['class' => 'btn btn-primary btn-block']) !!}
        {!! Form::close() !!}
    </div>
</div>

我的 Controller 页面 :

$report = $request->report;
$fromdate = $request->fromdate; 
$start_date = date("Y-m-d H:i:s", strtotime($fromdate));
$todate = $request->todate;
$end_date = date("Y-m-d H:i:s", strtotime($todate));

$users = Report::whereBetween('created_at', [
    $start_date->format('Y-m-d') . " 00:00:00",
    $end_date->format('Y-m-d') . " 23:59:59"
])->get();

Answer 1

使用 Carbon处理日期解析和格式化的库:

$users = Report::whereBetween('created_at', [
    Carbon::parse($request->fromdate)->toDateTimeString(), 
    Carbon::parse($request->todate)->toDateTimeString()
])->get();

见 Modifiers 部分为 startOfXXXX格式:

$users = Report::whereBetween('created_at', [
    Carbon::parse($request->fromdate)->startOfDay(),  // 2012-01-31 00:00:00
    Carbon::parse($request->todate)->endOfDay()       // 2012-01-31 23:59:59
])->get();